A multimillion-dollar deal with a minuscule arms dealer led to the death of a US citizen, delays in arming Syrian rebels, and the purchase of weapons from a pro-Russia dictatorship — all for a pile of defective 30-year-old weapons.

Yemen’s President Abdu Rabu Mansur Hadi, who abandoned his home in Aden earlier this week, arrived in Saudi Arabia’s capital Thursday. Saudi Arabia has since launched a military campaign inside the Yemen.